Electronics Forum | Thu Mar 24 17:36:31 EST 2005 | Grant
Hi, Yes MYDATA vibration feeders are a nightmare, but you might want to check the feeder. We had one that would vary a lot, and it never seemed to be able to be set to the right vibration level for consistent feeding. It turned out to have a problem
Electronics Forum | Wed Apr 27 11:43:32 EDT 2005 | patrickbruneel
Hi Daan, What we did in the time was pareto analyses on all board designs to determine the critical areas (mainly design errors) and only inspect those specific problem areas. Every batch had a copy of the PC board with problem areas marked and only
Electronics Forum | Mon Apr 25 12:19:21 EDT 2005 | siverts
Hi all, We produced a RoHS (lead-free) prototype order recently, and there was some components that we needed to replace on a couple of PCBA's. We found it very hard to do this even with the new solder iron. The components was just small RoHS SOIC's
Electronics Forum | Thu Jun 29 23:39:25 EDT 2006 | grantp
Hi, Oh, never noticed this old comment, but now the threads been revived i can comment. I have actually owned three MYDATA machines over the duration of the last 6 years, and they all had accuracy problems. It depends on what your doing, but we got
Electronics Forum | Fri Jul 29 19:12:30 EDT 2005 | Jason Fullerton
In the true sense of the term, tombstoning can only occur during reflow. Now, if your solder joints are cracking during thermal cycling and opening on one end you still have a problem - it just isn't "tombstoning". What laminate are you using on yo
Electronics Forum | Tue Jul 19 12:12:02 EDT 2005 | chunks
I have a QFP 160 used on 9 different products that had high fall out for "Insufficient Solder". Basically, a leg or two would pop free when inspected occasionally. This same part is used on different size products, located at different area of each
Electronics Forum | Thu Jul 28 05:41:22 EDT 2005 | K
Hi guys, Have any of you encountered harwin connector M80-647 in the past? Have you noticed any problems with the reliability of the component, solderability and 'reworkability' (thats a new word for sure)? Heres a PDF of the component; http://www.
Electronics Forum | Wed Aug 17 14:18:11 EDT 2005 | ppwlee
Dave, Answers to your questions: * From your pictures, the white residue appears to be only on the solder mask. Is that correct? If not, what is the location [eg, solder, nonsolder/nonmask areas] of the residue that doesn't show well in the pictur
Electronics Forum | Tue Sep 13 09:50:06 EDT 2005 | slthomas
"I think the best is to make sure the oven profile and other factors are set up so as to avoid any opens in the first place." I think you answered your own question. The difficulty (from my limited experience, anyway) in adequately qualifying your
Electronics Forum | Wed Oct 26 18:25:13 EDT 2005 | darby
The encoder on the Y axis motor is almost certainly kaput. Debris from the wear of the motor brushes or whatever else can find its way onto the encoder and give an ever increasing false pulse. The axis will start OK but progressively go out of whack
